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From: Terry Reedy on 19 May 2010 11:02
On 5/19/2010 1:14 AM, Vincent Davis wrote:
>
> I am sure this is easy but I am not sure how to do it and google was
> failing me.
> Lets say I have a class() with an def x() and def y() and I want
> print(class.x) and (class.y) to have custom prints (__str__) how do I do
> this
> For example
> class C(object):
> def __init__(self, new):
> self.letter = dict(a=1,b=2,c=3, amin=np.amin)
> self.new = new
> self._x = None
> self._Y = None
>
> @property
> def x(self):
> """I'm the 'x' property."""
> self._x = self.new
> return self._x
>
> @property
> def y(self):
> """I'm the 'x' property."""
> self._y = self.new*-1
> return self._y
>
> .......
> >>> print(class.x)

'class' is a keyword, so this is a syntax error.
Did you mean C.x?

> ****x****

In any case, the printing of an object ob is controlled by
type(ob).__str__ and type(ob).__repr__, so you can only control the
printing of instances of custom type. You cannot replace methods of
builtin classes.

Terry Jan Reedy

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